[MIPS] Add CONFIG_32BIT to kernel_default_arch_macros for MIPS.
Some of the required structure definitons are defined under this macro.

Change-Id: I7a9a986e371381697dcb56bd8ea362856ffa7509
diff --git a/libc/kernel/arch-mips/asm/pgtable.h b/libc/kernel/arch-mips/asm/pgtable.h
index ceb4343..46a5ba1 100644
--- a/libc/kernel/arch-mips/asm/pgtable.h
+++ b/libc/kernel/arch-mips/asm/pgtable.h
@@ -18,61 +18,62 @@
  ****************************************************************************/
 #ifndef _ASM_PGTABLE_H
 #define _ASM_PGTABLE_H
+#include <asm/pgtable-32.h>
 #include <asm/io.h>
-#include <asm/pgtable-bits.h>
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#include <asm/pgtable-bits.h>
 struct mm_struct;
 struct vm_area_struct;
 #define PAGE_NONE __pgprot(_PAGE_PRESENT | _CACHE_CACHABLE_NONCOHERENT)
-#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE |   _page_cachable_default)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE |   _page_cachable_default)
 #define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_READ |   _page_cachable_default)
 #define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_READ |   _page_cachable_default)
 #define PAGE_KERNEL __pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE |   _PAGE_GLOBAL | _page_cachable_default)
-#define PAGE_USERIO __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE |   _page_cachable_default)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define PAGE_USERIO __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE |   _page_cachable_default)
 #define PAGE_KERNEL_UNCACHED __pgprot(_PAGE_PRESENT | __READABLE |   __WRITEABLE | _PAGE_GLOBAL | _CACHE_UNCACHED)
 #define __P000 __pgprot(0)
 #define __P001 __pgprot(0)
-#define __P010 __pgprot(0)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define __P010 __pgprot(0)
 #define __P011 __pgprot(0)
 #define __P100 __pgprot(0)
 #define __P101 __pgprot(0)
-#define __P110 __pgprot(0)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define __P110 __pgprot(0)
 #define __P111 __pgprot(0)
 #define __S000 __pgprot(0)
 #define __S001 __pgprot(0)
-#define __S010 __pgprot(0)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define __S010 __pgprot(0)
 #define __S011 __pgprot(0)
 #define __S100 __pgprot(0)
 #define __S101 __pgprot(0)
-#define __S110 __pgprot(0)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define __S110 __pgprot(0)
 #define __S111 __pgprot(0)
 #define ZERO_PAGE(vaddr)   (virt_to_page((void *)(empty_zero_page + (((unsigned long)(vaddr)) & zero_page_mask))))
 #define pmd_phys(pmd) virt_to_phys((void *)pmd_val(pmd))
-#define pmd_page(pmd) (pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT))
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define pmd_page(pmd) (pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT))
 #define pmd_page_vaddr(pmd) pmd_val(pmd)
 #define pte_none(pte) (!(pte_val(pte) & ~_PAGE_GLOBAL))
 #define pte_present(pte) (pte_val(pte) & _PAGE_PRESENT)
-#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)
 #define set_pmd(pmdptr, pmdval) do { *(pmdptr) = (pmdval); } while(0)
 #define PGD_T_LOG2 (__builtin_ffs(sizeof(pgd_t)) - 1)
 #define PMD_T_LOG2 (__builtin_ffs(sizeof(pmd_t)) - 1)
-#define PTE_T_LOG2 (__builtin_ffs(sizeof(pte_t)) - 1)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define PTE_T_LOG2 (__builtin_ffs(sizeof(pte_t)) - 1)
 #define pgprot_noncached pgprot_noncached
 #define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
 #define kern_addr_valid(addr) (1)
-#define io_remap_pfn_range(vma, vaddr, pfn, size, prot)   remap_pfn_range(vma, vaddr, pfn, size, prot)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define io_remap_pfn_range(vma, vaddr, pfn, size, prot)   remap_pfn_range(vma, vaddr, pfn, size, prot)
 #include <asm-generic/pgtable.h>
 #define HAVE_ARCH_UNMAPPED_AREA
 #define pgtable_cache_init() do { } while (0)
-#endif
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif